Fiber-tip endoscope for optical and microwave control.

We present a robust, fiber-based endoscope with a silver direct-laser-written structure for radio frequency (RF) emission next to the optical fiber facet. Thereby, we are able to excite and probe a sample, such as nitrogen-vacancy (NV) centers in diamond, with RF and optical signals simultaneously and specifically measure the fluorescence of the sample fully through the fiber. At our targeted frequency range of around 2.

Radical C-H Trifluoromethoxylation of (Hetero)arenes with Bis(trifluoromethyl)peroxide.

Trifluoromethoxylated (hetero)arenes are of great interest for several disciplines, especially in agro- and medicinal chemistry. Radical C-H trifluoromethoxylation of (hetero)arenes represents an attractive approach to prepare such compounds, but the high cost and low atom economy of existing OCF radical sources make them unsuitable for the large-scale synthesis of trifluoromethoxylated building blocks. Herein, we introduce bis(trifluoromethyl)peroxide (BTMP, CF OOCF ) as a practical and efficient trifluoromethoxylating reagent that is easily accessible from inexpensive bulk chemicals.

Benzothiazolium salts as reagents for the deoxygenative perfluoroalkylthiolation of alcohols.

A series of 2-(perfluoroalkylthio)benzothiazolium (BT-SR) salts have been synthesized that serve as convenient sources of hitherto underexplored perfluoroalkylthiolate anions. An investigation of their reactivity in a deoxygenative nucleophilic substitution reaction led to the development of an unprecedented process that provides pentafluoroethyl and heptafluoropropyl thioethers directly from readily available alcohols.

Deoxygenative Tri- and Difluoromethylthiolation of Carboxylic Acids with Benzothiazolium Reagents.

Deoxygenative syntheses of fluorinated thioesters directly from carboxylic acids have been developed employing benzothiazolium reagents. The process using BT-SCF represents an attractive approach toward these SCF-containing compounds that avoids the use of metal SCF salts or preactivated acyl electrophiles. Moreover, the activation of BT-SCFH allows for an unprecedented nucleophilic difluoromethylthiolation reaction.

Functional Metallic Microcomponents via Liquid-Phase Multiphoton Direct Laser Writing: A Review.

We present an overview of functional metallic microstructures fabricated via direct laser writing out of the liquid phase. Metallic microstructures often are key components in diverse applications such as, e.g.

Deoxytrifluoromethylthiolation and Selenylation of Alcohols by Using Benzothiazolium Reagents.

Aliphatic compounds substituted with medicinally important trifluoromethylthio (SCF ) and trifluoromethylselenyl (SeCF ) groups were synthesized directly from alcohols by using the new benzothiazolium salts BT-SCF and BT-SeCF . These bench-stable fluorine-containing reagents are facile to use and can be prepared in two steps from non-fluorinated heteroaromatic starting materials. The metal-free deoxytrifluoromethylthiolation process using BT-SCF proceeds under mild conditions and the similarly efficient trifluoromethylselenylation reactions using BT-SeCF are, to the best of our knowledge, the first reported examples of this transformation.